From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Life and performance summary of different American type springs.
Identifier | ExFiles\Box 43\2\ Scan254 | |
Date | 16th October 1928 | |
To BY.{R.W. Bailey - Chief Engineer} from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} X3900 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}5/LG16.10.28. c.c. to DA.{Bernard Day - Chassis Design} Wor.{Arthur Wormald - General Works Manager} FOUR PAIRS OF AMERICAN TYPE SPRINGS. X4429 We attach a summary of the life of three pairs of these springs. It will be noted that though the 'B' pair top leaves were of substantially the same type as the 'A' pair, they had a much better life. Therefore we must conclude that the shock absorber failure in the test of the 'A' type springs had a bearing on the result. The life of the 'D' type springs appears to be very satisfactory and if jumping up the eyes is an easy process this seems to be the type of top leaf we should go for. We have been running the pair of 'C' type on a car but will take them off and run them on the bump to confirm the life of this type of top leaf. We note that the weight of these springs is 41 lbs. The weight of the American springs was 38 lbs. We are sending you a piece of spring and clip shewing where the 'D' type spring subsidiary leaves failed. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||